Insulator.



C. J. HELUNGS.

INSULATOR.

APPLICATION FILED JAN. 17. l9t6. 1,259,512. Patented Mar. 19, 1918.

2 SHEETS-SHEET 2.

Cfiarles (llkazl s.

UNITED STATES PATENT OFFICE.

CHARLES J". HELLINGS, OF LOS ANGELES, CALIFORNIA.

INSULATOR.

Application filed January 17, 1916.

To all whom it may concern:

Be it known that I, CHARLES J. HELLINes, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of'California, have invented new and useful Improvements in Insulators, of which the following is a specification.

This invention relates to improvements in insulators, and has particular application to a convertible insulator which may be readily changed from a stationary insulator to aswinging insulator and vice versa.

In carrying out the present. invention it is my purpose to provide an insulator of the class described whereby the electric current carrying wire will be thoroughly and etliciently insulated from its support and where in the component parts will be so arranged and correlated that the insulator may be readily assembled and taken down.

It is also my purpose to improve and simplify the general construction of insulators for electric current carrying conductors and to provide an insulator which may be manufactured and marketed at comparatively small cost.

With the above recited objects in view and others of a similar nature, the invention resides in the construction, combination and arrangement of parts set. forth herein and falling within the scope of the appended claim.

In the accompanying drawings:

Figure l is a side elevation of an insulator constructed in accordance with the present invention;

Fig. 2 is a vertical sectional view through the insulator;

Fig. 3 is a cross sectional View therethrough;

Fig. 4 is a view in side elevation of a modified form of insulator;

Fig. 5 is a view in elevation taken at right angles to Fig. t; and

Fig. 6 is a collective view showing the component parts of the insulator in side elevation.

Referring now to the drawings in detail 1' designates the body of the insulator. This body is cylindrical in cross section and is referably formed of wood fiber, and formed in the side wall of the body at diametrically opposite points are longitudinally extending grooves 2, while arranged at right angles to the grooves 2 are circumferentially extending grooves 3 spaced apart from each Specification of Letters Patent.

Patented Mar. 19, 1918.

Serial 110. 72,614.

other and from the ends of the body and intersecting the grooves 2. Y

4 designates what may be termed a connecting device. In the present instance this connecting device is formed of metal and is cylindrical in cross section, having one end closed and the other end open. Formed on the open end of the connecting device 4 and offset therefrom is an annular bead 5 while formed at the juncture of the bead 5 with the body of the connecting device is a seat 6. Formed integral with the inner wall of the cylindrical connectin device at the open end thereof are inwardly extending diametrically opposed lugs 7, while disposed below the lugs 7 are axially alined openings 8, and formed on the closed end of the cylindrical connectin device and depending therefrom is an eye 9.

10 indicates a bell shaped shield preferably formed of porcelain, and formed in the bell shaped shield 10 centrally thereof is an opening 11 through which the body 1 of the insulator is adapted to pass. At the ends of the opening 11 the respective surfaces of the shield or guard are formed with out wardly projecting aXially alining nipples 12 and 13.

In practice, the nipple 13 on the convexed surface of the bell shaped shield 10 is disposed upon the seat 6 formed at the juncture of the bead 5 with the cylindrical body portionof the connecting device, and one end of the body 1 is passed through the opening 11 in the shield and into the connecting de vice l the lugs '7 riding in the adjacent ends of the longitudinally extending grooves 2 in the body. When the lugs 7 aline with the adjacent circumferential groove 3 the body 1 is rotated onehalf a revolution so that the grooves 2 will be moved out of line with the lugs 7, and the end portions of the grooves 2 within the connecting device 4: and the groove 3 carrying the lugs 7 are filled with cement or analogous material.

Adapted to lit over the remaining end of the body 1 is a wire carrying device 1 cylindrical in cross section and preferably formed of metal. The outer end of the wire carrying device 14 is closed and formed integral with the closed end is a wire engaging hook 15 while formed on the inner surface of the wire carrying device 14; adjacent the open end thereof are diametrically opposed lugs 16 adapted to engage in the adjacent end portions of the grooves 2 and the groove 3. Formed on the open end of the cylindrical wire carrying device 1 1 and offset therefrom is a head 17 adapted to surround the nipple 12 on the concave face of the shield 10, while formed at the juncture of the bead 17 with the main body portion of the wire carrying device is a seat 18 against which the outer end of the nipple 12 abuts. hen applying the wire carrying device to the particular end of the body 1 the 1113's 1 are inserted in the outer ends of the grooves and the device slipped over the body, and when the lugs 16 are in alinement with the groo"e 3 the wire carrying device is rotated one-halt a revolution so that the lugs will be moved out of alinement with the grooves 2, thereby preventing accidental withdrawal of the wire carrying device from the body.

The side wall of the wire carrying device 14 is formed with axially alining openings 19 that are adapted to register with a transverse bore 20 formed in the adjacent end of the body 1, and passed through these alining openings and bore is a pin 21. The bore 20 is arranged at right angles to the grooves 2 so that when the wire carrying device has been rotated to the desired angle the openings 19 will aline with the bore 20 in order to receive the pin 21 and so insure the parts against accidental disconnection. Similarly, the openings 8 in the side wall of the connecting device 4 are adapted to aline with a bore formed in the body to receive a pin 2-3 whereby disconnection of the parts is avoided.

In the modified form of the invention the hook 15 is dispensed with and pivot ears 24 are formed on the outer end of the wire carrying device 14. Disposed between the ears 2 1 and pivotally connected thereto by means of a pivot bolt 25 is a pivot car 26 extending from the convexed side of a Wire receiver 27 concavo-convex in cross section and preferably curved longitudinally as illustrated in the drawing. In the modified construction the eye 9 on the outer end of the connecting device 4 is eliminated and a threaded stud 28 formed on such end of the connecting device. This stud 28 is adapted to pass through an opening in a supporting timber or other support and threaded on to the outer end of the stud is a nut 29 whereby the insulator may be held in place.

It will be seen that the shield 10 acts to prevent leakage of current from the conductor to the support, thereby thoroughly insulating the conductor from the cross arm on the pole or other supporting timber.

\Vhile I have herein shown and described certain forms of my invention by way of illustration, I wish it to be understood that I do not limit or confine myself to the recise details of construction herein descri d, as modifications and variations may be made within the scope of the claim and without departing from the spirit of the invention.

It may be here stated that my improved insulator is moisture and water proof between the contact points, thereby enabling the insulator to be used for carrying high voltage transmission wires.

Having thus described my invention, I claim:

An insulator comprising a core of insulating material provided with a pair of diametrically oppositely arranged longitudinal grooves and a pair of spaced circumferential grooves, cylindrical members disposed over each end of said core, lugs on said members passable through said longitudinal grooves and engageable within said circumferential grooves, pins passed through said core and said members for preventing relative rotation thereof, a hook formed on the end of one of said members and an eye formed on the end of the other of said members, and a dished insulator member disposed upon said core and held in clamped relation between said members.

In testimony whereof I aflix my signature in. presence of two witnesses.

CHARLES J. HE'LLINGS. \Vitnesses Horns V. BOWDEN, NORRIS MONTGOMERY.

00p! of thin patent may be obtained for five cents each, by addressing the "Commissioner of rateltl.

Washington, D. 0. 

